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Refurbished Galaxy S21 Ultra 5G

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3 smartphones lined up: iPhone, Samsung Galaxy and Google Pixel
Smartphones

How much does the Galaxy S21 Ultra 5G cost? | July 2025

In July2025, Galaxy S21 Ultra 5G prices starts at $225.74, but prices vary based on storage, color, condition and carrier compatibility.

Refurbished Galaxy S21 Ultra 5G's customer reviews

934 verified reviews in the last 24 months.

  • O

    Olivia L.

    Purchased on March 23, 2025

    Verified purchase

    I was a bit hesitant to order my phone at first since I’d never bought a refurbished device before, and I had seen a few negative reviews on social media. But I decided to give it a try, and I’m so glad I did! The shipping was quick, the phone looks brand new, and it runs perfectly — you’d never guess it’s refurbished. I’ll definitely be ordering again!

    Reviewed in the United States on April 7, 2025

    Galaxy S21 Ultra 5G 128GB - Silver - Unlocked
  • R

    Richard Q.

    Purchased on May 14, 2025

    Verified purchase

    I really love the galaxy s21 ultra 5g this is an excellent phone working fine right out of the box. and going strong too! Even after the wear and tear of daily life. Well worth the price too!! Am very happy I bought this phone!

    Reviewed in the United States on June 1, 2025

    Galaxy S21 Ultra 5G 512GB - Gray - Unlocked
  • M

    Michael t W.

    Purchased on September 11, 2024

    Verified purchase

    This is my fourth phone Ive gotten from backmarket!! WHY? Because searching the net up and down ..Backmarket alwasy seemed tpo have the best deal.One big reason is the first two had clear new screens and the phone was refurbished.This time i got a galaxy s21..It is brand new looking..Super good phone.Super happy-PEACE

    Reviewed in the United States on November 11, 2024

    Galaxy S21 Ultra 5G 128GB - Black - Unlocked
  • M

    Michael E.

    Purchased on February 2, 2024

    Verified purchase

    The Samsung S21 Ultra appears to be fine in the two weeks since we received it and was as promised. Ordering was easy and delivery was as expected. Our trade-in offer was much lower than we had anticipated ($25.00) for a phone in complete working order without problems. I have previously purchased certified, refurbished smartphones directly from Samsung and felt we received a much better & fairer trade-in offer. While the price of the S21 Ultra was cheaper from Back Market, I believe that I might have fared better buying from Samsung in terms of overall cost. I will research more closely when it's time for our next purchase.

    Reviewed in the United States on February 18, 2024

    Galaxy S21 Ultra 5G 128GB - Black - Unlocked
  • J

    Jennifer U.

    Purchased on October 29, 2023

    Verified purchase

    I was very very skeptical about buying a refurbished phone. I debated about it for months. When my son bought a refurbished iPhone that looked brand new, and worked perfectly I decided to go for it! I was not disappointed! I got the Samsung galaxy S21 Ultra in excellent condition. It came quicker than expected and there were no noticeable scratches or dings on the back, there was a tiny scratch on the screen which you cannot even see with the screen on. Overall I am super satisfied with the phone, I got a great deal on an awesome phone! I will definitely buy from Backmarket again!

    Reviewed in the United States on November 12, 2023

    Galaxy S21 Ultra 5G 128GB - Silver - Unlocked
  • G

    Geraldine M.

    Purchased on January 23, 2025

    Verified purchase

    The Galaxy S21 Ultra 5G 128G Black is a nice phone. It had one slight scratch although the description said Excellent Condition with no visible marks. Both phones had visible marks. We liked the phone in spite of this.

    Reviewed in the United States on February 10, 2025

    Galaxy S21 Ultra 5G 128GB - Black - Unlocked
  • G

    Gerald P.

    Purchased on March 10, 2024

    Verified purchase

    Trading in my beat-up S21Ultra with damaged screen for this excellent condition replacement enabled me to, in turn, take advantage of trade-in promotion at Samsung Store. My old phone was worthless for trade-in otherwise. The refurbisher who purchased my trade-in tried to claim that it didn't take a charge... but with my photos in hand, the Backmarket staff swiftly dealt with that. Be sure to take photos of live phone, and of each stage of packaging, so that Backmarket is able to support you in case of dispute. Great customer service!

    Reviewed in the United States on March 24, 2024

    Galaxy S21 Ultra 5G 128GB - Black - Unlocked
  • S

    Shawn C.

    Purchased on July 4, 2023

    Verified purchase

    I'm Really happy with my Samsung galaxy S21 ultra 5G! I really like the screen size, how fast it operates and the long battery life! I'll definitely recommend Back Market to anyone looking for a really good refurbished phone!

    Reviewed in the United States on July 11, 2023

    Galaxy S21 Ultra 5G 128GB - Black - Unlocked
  • G

    Gene B.

    Purchased on February 29, 2024

    Verified purchase

    the whole experience was seamless and great! couldn't have asked for a better experience. I purchased S21 Ultra 256gb Unlocked. while I was hesitant about buying a refurbished device, then my device showed up and all the hesitance went right away! will purchase from again !

    Reviewed in the United States on March 18, 2024

    Galaxy S21 Ultra 5G 256GB - Black - Unlocked
  • J

    Jared R.

    Purchased on January 17, 2024

    Verified purchase

    The phone is great. It works perfectly, the camera is awesome and te phone's processing capabilities are in good condition. I always buy refurbished because it's cheaper and this product came on time and in great condition so, thank you!

    Reviewed in the United States on February 7, 2024

    Galaxy S21 Ultra 5G 128GB - Silver - Unlocked
See all 934 reviews

Refurbished Galaxy S21 Ultra 5G – Fast connectivity device

 

The refurbished Samsung Galaxy S21 Ultra 5G from Back Market is a high-performing device that has been thoroughly tested to ensure it gets the job done right, right away. It has been refurbished to give it new and exciting features, thus performing like a brand new Galaxy S21 Ultra 5G. If you prefer a Samsung phone that guarantees fast connectivity, the refurbished Galaxy S21 Ultra 5G is your best bet. It has a powerful and intelligent battery that stores adequate power to keep it running all day long. Would you like to take some memorable photos and videos with your family and friends? The device has a high-resolution camera to help you shoot stunning photos and videos any time of the day. The refurbished Galaxy S21 Ultra 5G will help you discover more anywhere and anytime. The S21 Ultra 5G belongs to the Galaxy S21 series, which has been released 2021.

Significant features to find in Galaxy S21 Ultra 5G refurbished device

  • The first thing you’ll love about the refurbished Samsung Galaxy 21 Ultra 5G is its fast processor and robust connectivity. Its processor and 5G network connectivity allow you to perform various activities such as browsing, live streaming, video editing, and story sharing in a flash. You can also multi-task without it running slowly. It has a 5,000 mAh battery that can last for over 11 hours, ensuring you stay connected to the outside world.
  • The refurbished Galaxy S21 Ultra 5G helps you capture the best moments in your life, thanks to its highest resolution camera. It has 108MP and an upgraded sensor to take crisp, clear, and colourful photos and videos. The multi-lens camera helps you zoom in with more clarity from multiple angles. Also, its super-sleek 8k video will help you to shoot HD videos during the day and at night. You can use its camera to create share-ready GIFs in a single take. In other words, its camera makes you feel like you have a professional studio wherever you go.
  • When it comes to displaying, the refurbished Samsung Galaxy 21 Ultra 5G helps you focus on what’s shown on the screen without straining your eyes. It has a high contrast ratio and a 6.8-inch adaptive screen display that will automatically adjust from 10Hz to 120 Hz. Also, it has intuitive blue-light management that changes depending on the time of the day to take care of your eyes.
  • You can store all your photos, videos, and documents with the refurbished S21 Ultra 5G, thanks to its 128GB internal memory. The device has everything to help you explore and discover more! 

Why buy a cheap Galaxy S21 Ultra 5G from Back Market?

Buying a refurbished Samsung Galaxy 21 Ultra 5G from Back Market has various exciting perks. The device is cheap and guarantees the same high-quality features, just like a brand new S21 Ultra 5G. Back Market ensures that the device is meticulously refurbished to function as its original counterpart. As a result, you’ll purchase a high-performing device and save some money.

If you’re eco-conscious, the device conserves the environment by saving 8 Oz of e-waste. You’ll also enjoy 30 days to change your mind if it doesn’t impress you and a 1-year warranty. Are you looking for a cheaper phone than the S21 Ultra 5G but you still want a top notch phone? Then we can recommend you the Galaxy S21 Plus 5G or even the Galaxy S20 Ultra 5G, that has been released in 2020.

Does a refurbished Galaxy S21 Ultra 5G have an external memory slot?

Unfortunately, this phone doesn’t have an external memory slot for a MicroSD card. However, you can use its large internal 128GB memory to store all your media files, apps, and essential documents.

Is refurbished Samsung Galaxy 21 Ultra 5G single or dual sim?

The device is a single sim.

What other accessories are included in Galaxy S21 Ultra 5G?

All Samsung Galaxy 21 Ultra 5G come with a compatible charging cable. However, you won’t find an AC adapter and headphones since they contribute to e-waste, because most likely you already have an adapter and headphones.